./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_93-evilcollapse_racefree.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_93-evilcollapse_racefree.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash dad265ed8a17f32bb0a174302dfe188f9a15f60b81cc9c28a67851ab05270da2 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-29 22:08:36,478 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 22:08:36,480 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 22:08:36,503 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 22:08:36,508 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 22:08:36,511 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 22:08:36,514 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 22:08:36,516 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 22:08:36,517 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 22:08:36,520 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 22:08:36,521 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 22:08:36,523 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 22:08:36,524 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 22:08:36,526 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 22:08:36,528 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 22:08:36,531 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 22:08:36,531 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 22:08:36,532 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 22:08:36,533 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 22:08:36,535 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 22:08:36,537 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 22:08:36,538 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 22:08:36,539 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 22:08:36,539 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 22:08:36,545 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 22:08:36,545 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 22:08:36,546 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 22:08:36,547 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 22:08:36,547 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 22:08:36,549 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 22:08:36,551 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 22:08:36,552 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 22:08:36,553 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 22:08:36,554 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 22:08:36,554 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 22:08:36,555 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 22:08:36,556 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 22:08:36,556 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 22:08:36,556 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 22:08:36,557 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 22:08:36,557 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 22:08:36,558 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-29 22:08:36,584 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 22:08:36,584 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 22:08:36,585 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 22:08:36,585 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 22:08:36,586 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 22:08:36,586 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 22:08:36,586 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 22:08:36,587 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 22:08:36,587 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 22:08:36,587 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 22:08:36,587 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 22:08:36,588 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 22:08:36,588 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 22:08:36,588 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 22:08:36,588 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 22:08:36,588 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-29 22:08:36,589 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-29 22:08:36,589 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-29 22:08:36,589 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 22:08:36,589 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-29 22:08:36,589 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 22:08:36,589 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 22:08:36,589 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 22:08:36,590 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 22:08:36,590 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 22:08:36,590 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 22:08:36,590 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 22:08:36,590 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 22:08:36,591 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-29 22:08:36,591 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-29 22:08:36,591 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 22:08:36,591 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 22:08:36,591 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 22:08:36,591 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 22:08:36,591 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dad265ed8a17f32bb0a174302dfe188f9a15f60b81cc9c28a67851ab05270da2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-29 22:08:36,830 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 22:08:36,851 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 22:08:36,853 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 22:08:36,853 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 22:08:36,853 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 22:08:36,854 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_93-evilcollapse_racefree.i [2023-08-29 22:08:37,764 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 22:08:37,978 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 22:08:37,978 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_93-evilcollapse_racefree.i [2023-08-29 22:08:37,992 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d187d6d2/4af4dd98d2fc45b5ae07f09bdaf816bf/FLAG5a84b2b47 [2023-08-29 22:08:38,001 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d187d6d2/4af4dd98d2fc45b5ae07f09bdaf816bf [2023-08-29 22:08:38,002 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 22:08:38,003 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 22:08:38,004 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 22:08:38,004 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 22:08:38,006 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 22:08:38,006 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 10:08:38" (1/1) ... [2023-08-29 22:08:38,007 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5641dcb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:08:38, skipping insertion in model container [2023-08-29 22:08:38,007 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 10:08:38" (1/1) ... [2023-08-29 22:08:38,011 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 22:08:38,039 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 22:08:38,294 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_93-evilcollapse_racefree.i[47038,47051] [2023-08-29 22:08:38,305 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-29 22:08:38,306 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-29 22:08:38,307 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-29 22:08:38,308 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-29 22:08:38,338 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 22:08:38,357 ERROR L324 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2023-08-29 22:08:38,357 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4281fee1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:08:38, skipping insertion in model container [2023-08-29 22:08:38,357 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 22:08:38,357 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-08-29 22:08:38,359 INFO L158 Benchmark]: Toolchain (without parser) took 355.27ms. Allocated memory is still 69.2MB. Free memory was 37.9MB in the beginning and 39.0MB in the end (delta: -1.1MB). Peak memory consumption was 7.7MB. Max. memory is 16.1GB. [2023-08-29 22:08:38,359 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 56.6MB. Free memory was 34.1MB in the beginning and 34.1MB in the end (delta: 36.5kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-29 22:08:38,360 INFO L158 Benchmark]: CACSL2BoogieTranslator took 353.80ms. Allocated memory is still 69.2MB. Free memory was 37.8MB in the beginning and 39.0MB in the end (delta: -1.2MB). Peak memory consumption was 7.7MB. Max. memory is 16.1GB. [2023-08-29 22:08:38,361 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 56.6MB. Free memory was 34.1MB in the beginning and 34.1MB in the end (delta: 36.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 353.80ms. Allocated memory is still 69.2MB. Free memory was 37.8MB in the beginning and 39.0MB in the end (delta: -1.2MB). Peak memory consumption was 7.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1058]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_93-evilcollapse_racefree.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash dad265ed8a17f32bb0a174302dfe188f9a15f60b81cc9c28a67851ab05270da2 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-29 22:08:39,595 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 22:08:39,596 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 22:08:39,622 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 22:08:39,624 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 22:08:39,627 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 22:08:39,629 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 22:08:39,631 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 22:08:39,632 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 22:08:39,636 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 22:08:39,636 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 22:08:39,638 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 22:08:39,639 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 22:08:39,641 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 22:08:39,642 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 22:08:39,645 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 22:08:39,646 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 22:08:39,647 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 22:08:39,648 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 22:08:39,651 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 22:08:39,652 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 22:08:39,657 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 22:08:39,669 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 22:08:39,669 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 22:08:39,671 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 22:08:39,671 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 22:08:39,672 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 22:08:39,673 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 22:08:39,673 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 22:08:39,674 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 22:08:39,677 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 22:08:39,678 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 22:08:39,679 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 22:08:39,680 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 22:08:39,681 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 22:08:39,681 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 22:08:39,681 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 22:08:39,681 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 22:08:39,682 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 22:08:39,682 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 22:08:39,682 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 22:08:39,684 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-08-29 22:08:39,704 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 22:08:39,704 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 22:08:39,705 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 22:08:39,705 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 22:08:39,706 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 22:08:39,706 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 22:08:39,707 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 22:08:39,707 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 22:08:39,707 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 22:08:39,707 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 22:08:39,708 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 22:08:39,708 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 22:08:39,708 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 22:08:39,708 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 22:08:39,708 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 22:08:39,708 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-29 22:08:39,708 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-29 22:08:39,709 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-29 22:08:39,709 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 22:08:39,709 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-29 22:08:39,709 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2023-08-29 22:08:39,709 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-08-29 22:08:39,709 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 22:08:39,709 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 22:08:39,710 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 22:08:39,710 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 22:08:39,710 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 22:08:39,710 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 22:08:39,710 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 22:08:39,710 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 22:08:39,711 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2023-08-29 22:08:39,711 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-08-29 22:08:39,711 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 22:08:39,711 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 22:08:39,711 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 22:08:39,711 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2023-08-29 22:08:39,711 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 22:08:39,712 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dad265ed8a17f32bb0a174302dfe188f9a15f60b81cc9c28a67851ab05270da2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-29 22:08:39,935 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 22:08:39,950 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 22:08:39,952 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 22:08:39,953 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 22:08:39,953 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 22:08:39,955 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_93-evilcollapse_racefree.i [2023-08-29 22:08:40,945 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 22:08:41,177 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 22:08:41,177 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_93-evilcollapse_racefree.i [2023-08-29 22:08:41,190 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/340aef753/f6d09dceb10f453d88a70f6554fcd2a5/FLAG3cf4f8aa5 [2023-08-29 22:08:41,200 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/340aef753/f6d09dceb10f453d88a70f6554fcd2a5 [2023-08-29 22:08:41,202 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 22:08:41,203 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 22:08:41,204 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 22:08:41,204 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 22:08:41,206 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 22:08:41,207 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 10:08:41" (1/1) ... [2023-08-29 22:08:41,208 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33027b5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:08:41, skipping insertion in model container [2023-08-29 22:08:41,208 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 10:08:41" (1/1) ... [2023-08-29 22:08:41,212 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 22:08:41,260 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 22:08:41,583 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_93-evilcollapse_racefree.i[47038,47051] [2023-08-29 22:08:41,598 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-29 22:08:41,598 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-29 22:08:41,598 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-29 22:08:41,599 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-29 22:08:41,625 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 22:08:41,646 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-08-29 22:08:41,651 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 22:08:41,675 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_93-evilcollapse_racefree.i[47038,47051] [2023-08-29 22:08:41,679 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-29 22:08:41,679 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-29 22:08:41,680 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-29 22:08:41,680 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-29 22:08:41,695 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 22:08:41,703 INFO L203 MainTranslator]: Completed pre-run [2023-08-29 22:08:41,757 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_93-evilcollapse_racefree.i[47038,47051] [2023-08-29 22:08:41,759 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-29 22:08:41,760 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-29 22:08:41,761 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-29 22:08:41,762 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-29 22:08:41,779 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 22:08:41,821 INFO L208 MainTranslator]: Completed translation [2023-08-29 22:08:41,821 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:08:41 WrapperNode [2023-08-29 22:08:41,821 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 22:08:41,822 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-29 22:08:41,822 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-29 22:08:41,822 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-29 22:08:41,826 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:08:41" (1/1) ... [2023-08-29 22:08:41,841 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:08:41" (1/1) ... [2023-08-29 22:08:41,867 INFO L138 Inliner]: procedures = 283, calls = 51, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 224 [2023-08-29 22:08:41,868 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-29 22:08:41,868 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-29 22:08:41,868 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-29 22:08:41,868 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-29 22:08:41,874 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:08:41" (1/1) ... [2023-08-29 22:08:41,874 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:08:41" (1/1) ... [2023-08-29 22:08:41,877 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:08:41" (1/1) ... [2023-08-29 22:08:41,877 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:08:41" (1/1) ... [2023-08-29 22:08:41,885 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:08:41" (1/1) ... [2023-08-29 22:08:41,888 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:08:41" (1/1) ... [2023-08-29 22:08:41,890 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:08:41" (1/1) ... [2023-08-29 22:08:41,891 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:08:41" (1/1) ... [2023-08-29 22:08:41,893 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-29 22:08:41,894 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-29 22:08:41,894 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-29 22:08:41,894 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-29 22:08:41,895 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:08:41" (1/1) ... [2023-08-29 22:08:41,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 22:08:41,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 22:08:41,929 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-29 22:08:41,938 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-29 22:08:41,958 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-08-29 22:08:41,958 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-29 22:08:41,958 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-08-29 22:08:41,958 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-29 22:08:41,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-08-29 22:08:41,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-08-29 22:08:41,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2023-08-29 22:08:41,959 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-29 22:08:41,959 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-29 22:08:41,959 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-29 22:08:41,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-29 22:08:41,960 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-29 22:08:41,960 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-29 22:08:41,960 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-29 22:08:41,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-29 22:08:41,962 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-29 22:08:42,120 INFO L236 CfgBuilder]: Building ICFG [2023-08-29 22:08:42,121 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-29 22:08:42,610 INFO L277 CfgBuilder]: Performing block encoding [2023-08-29 22:08:42,615 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-29 22:08:42,615 INFO L302 CfgBuilder]: Removed 16 assume(true) statements. [2023-08-29 22:08:42,616 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 10:08:42 BoogieIcfgContainer [2023-08-29 22:08:42,616 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-29 22:08:42,617 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-29 22:08:42,617 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-29 22:08:42,619 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-29 22:08:42,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 10:08:41" (1/3) ... [2023-08-29 22:08:42,620 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47764f2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 10:08:42, skipping insertion in model container [2023-08-29 22:08:42,620 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:08:41" (2/3) ... [2023-08-29 22:08:42,620 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47764f2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 10:08:42, skipping insertion in model container [2023-08-29 22:08:42,620 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 10:08:42" (3/3) ... [2023-08-29 22:08:42,621 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_93-evilcollapse_racefree.i [2023-08-29 22:08:42,638 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-29 22:08:42,639 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 44 error locations. [2023-08-29 22:08:42,639 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-29 22:08:42,711 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-29 22:08:42,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 255 places, 279 transitions, 566 flow [2023-08-29 22:08:42,788 INFO L130 PetriNetUnfolder]: 29/302 cut-off events. [2023-08-29 22:08:42,788 INFO L131 PetriNetUnfolder]: For 1/2 co-relation queries the response was YES. [2023-08-29 22:08:42,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 308 conditions, 302 events. 29/302 cut-off events. For 1/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 856 event pairs, 0 based on Foata normal form. 0/221 useless extension candidates. Maximal degree in co-relation 168. Up to 4 conditions per place. [2023-08-29 22:08:42,792 INFO L82 GeneralOperation]: Start removeDead. Operand has 255 places, 279 transitions, 566 flow [2023-08-29 22:08:42,796 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 255 places, 279 transitions, 566 flow [2023-08-29 22:08:42,798 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 22:08:42,807 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 255 places, 279 transitions, 566 flow [2023-08-29 22:08:42,812 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 255 places, 279 transitions, 566 flow [2023-08-29 22:08:42,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 255 places, 279 transitions, 566 flow [2023-08-29 22:08:42,861 INFO L130 PetriNetUnfolder]: 29/302 cut-off events. [2023-08-29 22:08:42,861 INFO L131 PetriNetUnfolder]: For 1/2 co-relation queries the response was YES. [2023-08-29 22:08:42,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 308 conditions, 302 events. 29/302 cut-off events. For 1/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 856 event pairs, 0 based on Foata normal form. 0/221 useless extension candidates. Maximal degree in co-relation 168. Up to 4 conditions per place. [2023-08-29 22:08:42,867 INFO L119 LiptonReduction]: Number of co-enabled transitions 5742 [2023-08-29 22:12:53,881 WARN L222 SmtUtils]: Spent 2.16m on a formula simplification. DAG size of input: 224 DAG size of output: 216 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-29 22:13:56,937 WARN L222 SmtUtils]: Spent 1.05m on a formula simplification that was a NOOP. DAG size: 212 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-29 22:16:09,595 WARN L222 SmtUtils]: Spent 2.21m on a formula simplification. DAG size of input: 224 DAG size of output: 216 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-29 22:17:12,450 WARN L222 SmtUtils]: Spent 1.05m on a formula simplification that was a NOOP. DAG size: 212 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-29 22:17:44,269 INFO L134 LiptonReduction]: Checked pairs total: 6878 [2023-08-29 22:17:44,270 INFO L136 LiptonReduction]: Total number of compositions: 323 [2023-08-29 22:17:44,278 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 22:17:44,281 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@47b8f5da, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 22:17:44,281 INFO L358 AbstractCegarLoop]: Starting to check reachability of 59 error locations. [2023-08-29 22:17:44,283 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2023-08-29 22:17:44,283 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 22:17:44,283 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:17:44,283 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-29 22:17:44,284 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-29 22:17:44,286 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:17:44,286 INFO L85 PathProgramCache]: Analyzing trace with hash 35522, now seen corresponding path program 1 times [2023-08-29 22:17:44,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 22:17:44,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1815971308] [2023-08-29 22:17:44,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:17:44,294 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:17:44,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 22:17:44,297 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 22:17:44,301 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-08-29 22:17:44,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:17:44,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-29 22:17:44,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 22:17:44,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 22:17:44,417 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 22:17:44,417 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 22:17:44,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1815971308] [2023-08-29 22:17:44,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1815971308] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:17:44,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:17:44,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 22:17:44,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973015601] [2023-08-29 22:17:44,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:17:44,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 22:17:44,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 22:17:44,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 22:17:44,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 22:17:44,761 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 251 out of 602 [2023-08-29 22:17:44,763 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 83 transitions, 174 flow. Second operand has 3 states, 3 states have (on average 251.66666666666666) internal successors, (755), 3 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:17:44,763 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:17:44,763 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 251 of 602 [2023-08-29 22:17:44,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:17:46,290 INFO L130 PetriNetUnfolder]: 239/565 cut-off events. [2023-08-29 22:17:46,290 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 22:17:46,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1059 conditions, 565 events. 239/565 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2958 event pairs, 200 based on Foata normal form. 33/283 useless extension candidates. Maximal degree in co-relation 981. Up to 484 conditions per place. [2023-08-29 22:17:46,293 INFO L137 encePairwiseOnDemand]: 565/602 looper letters, 53 selfloop transitions, 5 changer transitions 0/66 dead transitions. [2023-08-29 22:17:46,294 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 66 transitions, 256 flow [2023-08-29 22:17:46,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 22:17:46,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 22:17:46,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 856 transitions. [2023-08-29 22:17:46,310 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4739756367663344 [2023-08-29 22:17:46,310 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 856 transitions. [2023-08-29 22:17:46,311 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 856 transitions. [2023-08-29 22:17:46,312 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:17:46,314 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 856 transitions. [2023-08-29 22:17:46,318 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 285.3333333333333) internal successors, (856), 3 states have internal predecessors, (856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:17:46,322 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 602.0) internal successors, (2408), 4 states have internal predecessors, (2408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:17:46,323 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 602.0) internal successors, (2408), 4 states have internal predecessors, (2408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:17:46,324 INFO L175 Difference]: Start difference. First operand has 71 places, 83 transitions, 174 flow. Second operand 3 states and 856 transitions. [2023-08-29 22:17:46,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 66 transitions, 256 flow [2023-08-29 22:17:46,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 66 transitions, 256 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 22:17:46,328 INFO L231 Difference]: Finished difference. Result has 59 places, 63 transitions, 173 flow [2023-08-29 22:17:46,329 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=602, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=173, PETRI_PLACES=59, PETRI_TRANSITIONS=63} [2023-08-29 22:17:46,331 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -12 predicate places. [2023-08-29 22:17:46,331 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 63 transitions, 173 flow [2023-08-29 22:17:46,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 251.66666666666666) internal successors, (755), 3 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:17:46,332 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:17:46,332 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-29 22:17:46,343 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-08-29 22:17:46,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:17:46,541 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-29 22:17:46,541 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:17:46,541 INFO L85 PathProgramCache]: Analyzing trace with hash 35521, now seen corresponding path program 1 times [2023-08-29 22:17:46,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 22:17:46,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [870653177] [2023-08-29 22:17:46,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:17:46,542 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:17:46,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 22:17:46,543 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 22:17:46,545 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-08-29 22:17:46,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:17:46,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-29 22:17:46,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 22:17:46,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 22:17:46,601 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 22:17:46,602 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 22:17:46,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [870653177] [2023-08-29 22:17:46,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [870653177] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:17:46,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:17:46,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 22:17:46,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973856801] [2023-08-29 22:17:46,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:17:46,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 22:17:46,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 22:17:46,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 22:17:46,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 22:17:46,851 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 602 [2023-08-29 22:17:46,852 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 63 transitions, 173 flow. Second operand has 3 states, 3 states have (on average 252.66666666666666) internal successors, (758), 3 states have internal predecessors, (758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:17:46,852 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:17:46,852 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 602 [2023-08-29 22:17:46,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:17:48,102 INFO L130 PetriNetUnfolder]: 227/526 cut-off events. [2023-08-29 22:17:48,102 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 22:17:48,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1016 conditions, 526 events. 227/526 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2773 event pairs, 152 based on Foata normal form. 2/235 useless extension candidates. Maximal degree in co-relation 975. Up to 376 conditions per place. [2023-08-29 22:17:48,105 INFO L137 encePairwiseOnDemand]: 594/602 looper letters, 69 selfloop transitions, 3 changer transitions 0/80 dead transitions. [2023-08-29 22:17:48,105 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 80 transitions, 347 flow [2023-08-29 22:17:48,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 22:17:48,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 22:17:48,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 829 transitions. [2023-08-29 22:17:48,109 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4590254706533776 [2023-08-29 22:17:48,109 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 829 transitions. [2023-08-29 22:17:48,109 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 829 transitions. [2023-08-29 22:17:48,109 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:17:48,109 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 829 transitions. [2023-08-29 22:17:48,110 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 276.3333333333333) internal successors, (829), 3 states have internal predecessors, (829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:17:48,114 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 602.0) internal successors, (2408), 4 states have internal predecessors, (2408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:17:48,114 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 602.0) internal successors, (2408), 4 states have internal predecessors, (2408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:17:48,114 INFO L175 Difference]: Start difference. First operand has 59 places, 63 transitions, 173 flow. Second operand 3 states and 829 transitions. [2023-08-29 22:17:48,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 80 transitions, 347 flow [2023-08-29 22:17:48,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 80 transitions, 342 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 22:17:48,116 INFO L231 Difference]: Finished difference. Result has 57 places, 59 transitions, 167 flow [2023-08-29 22:17:48,117 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=602, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=167, PETRI_PLACES=57, PETRI_TRANSITIONS=59} [2023-08-29 22:17:48,117 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -14 predicate places. [2023-08-29 22:17:48,117 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 59 transitions, 167 flow [2023-08-29 22:17:48,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 252.66666666666666) internal successors, (758), 3 states have internal predecessors, (758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:17:48,118 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:17:48,118 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-29 22:17:48,126 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-08-29 22:17:48,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:17:48,324 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-29 22:17:48,325 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:17:48,325 INFO L85 PathProgramCache]: Analyzing trace with hash 1104475, now seen corresponding path program 1 times [2023-08-29 22:17:48,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 22:17:48,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [883469977] [2023-08-29 22:17:48,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:17:48,325 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:17:48,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 22:17:48,329 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 22:17:48,330 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-08-29 22:17:48,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:17:48,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 23 conjunts are in the unsatisfiable core [2023-08-29 22:17:48,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 22:17:48,512 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 21 [2023-08-29 22:17:48,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 22:17:48,542 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 22:17:48,542 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 22:17:48,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [883469977] [2023-08-29 22:17:48,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [883469977] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:17:48,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:17:48,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 22:17:48,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995395125] [2023-08-29 22:17:48,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:17:48,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-29 22:17:48,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 22:17:48,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-29 22:17:48,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-29 22:17:48,961 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 602 [2023-08-29 22:17:48,962 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 59 transitions, 167 flow. Second operand has 4 states, 4 states have (on average 240.75) internal successors, (963), 4 states have internal predecessors, (963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:17:48,963 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:17:48,963 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 602 [2023-08-29 22:17:48,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:17:50,653 INFO L130 PetriNetUnfolder]: 227/529 cut-off events. [2023-08-29 22:17:50,654 INFO L131 PetriNetUnfolder]: For 20/20 co-relation queries the response was YES. [2023-08-29 22:17:50,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1109 conditions, 529 events. 227/529 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2807 event pairs, 152 based on Foata normal form. 0/257 useless extension candidates. Maximal degree in co-relation 1044. Up to 373 conditions per place. [2023-08-29 22:17:50,656 INFO L137 encePairwiseOnDemand]: 594/602 looper letters, 66 selfloop transitions, 9 changer transitions 0/83 dead transitions. [2023-08-29 22:17:50,656 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 83 transitions, 371 flow [2023-08-29 22:17:50,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-29 22:17:50,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-29 22:17:50,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1033 transitions. [2023-08-29 22:17:50,660 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42898671096345514 [2023-08-29 22:17:50,660 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1033 transitions. [2023-08-29 22:17:50,662 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1033 transitions. [2023-08-29 22:17:50,663 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:17:50,663 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1033 transitions. [2023-08-29 22:17:50,665 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 258.25) internal successors, (1033), 4 states have internal predecessors, (1033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:17:50,668 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 602.0) internal successors, (3010), 5 states have internal predecessors, (3010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:17:50,669 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 602.0) internal successors, (3010), 5 states have internal predecessors, (3010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:17:50,669 INFO L175 Difference]: Start difference. First operand has 57 places, 59 transitions, 167 flow. Second operand 4 states and 1033 transitions. [2023-08-29 22:17:50,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 83 transitions, 371 flow [2023-08-29 22:17:50,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 83 transitions, 365 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 22:17:50,673 INFO L231 Difference]: Finished difference. Result has 59 places, 60 transitions, 195 flow [2023-08-29 22:17:50,677 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=602, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=195, PETRI_PLACES=59, PETRI_TRANSITIONS=60} [2023-08-29 22:17:50,678 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -12 predicate places. [2023-08-29 22:17:50,678 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 60 transitions, 195 flow [2023-08-29 22:17:50,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 240.75) internal successors, (963), 4 states have internal predecessors, (963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:17:50,679 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:17:50,679 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-29 22:17:50,691 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-08-29 22:17:50,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:17:50,894 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-29 22:17:50,894 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:17:50,894 INFO L85 PathProgramCache]: Analyzing trace with hash 1104481, now seen corresponding path program 1 times [2023-08-29 22:17:50,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 22:17:50,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [230585019] [2023-08-29 22:17:50,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:17:50,895 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:17:50,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 22:17:50,897 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 22:17:50,898 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-08-29 22:17:51,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:17:51,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 30 conjunts are in the unsatisfiable core [2023-08-29 22:17:51,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 22:17:51,108 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2023-08-29 22:17:51,120 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2023-08-29 22:17:51,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 22:17:51,142 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 22:17:51,142 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 22:17:51,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [230585019] [2023-08-29 22:17:51,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [230585019] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:17:51,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:17:51,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 22:17:51,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335159028] [2023-08-29 22:17:51,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:17:51,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-29 22:17:51,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 22:17:51,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-29 22:17:51,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-29 22:17:51,625 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 602 [2023-08-29 22:17:51,626 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 60 transitions, 195 flow. Second operand has 4 states, 4 states have (on average 238.75) internal successors, (955), 4 states have internal predecessors, (955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:17:51,626 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:17:51,626 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 602 [2023-08-29 22:17:51,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:17:53,195 INFO L130 PetriNetUnfolder]: 229/546 cut-off events. [2023-08-29 22:17:53,195 INFO L131 PetriNetUnfolder]: For 20/20 co-relation queries the response was YES. [2023-08-29 22:17:53,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1150 conditions, 546 events. 229/546 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2869 event pairs, 190 based on Foata normal form. 1/278 useless extension candidates. Maximal degree in co-relation 1070. Up to 463 conditions per place. [2023-08-29 22:17:53,201 INFO L137 encePairwiseOnDemand]: 596/602 looper letters, 51 selfloop transitions, 5 changer transitions 0/64 dead transitions. [2023-08-29 22:17:53,201 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 64 transitions, 330 flow [2023-08-29 22:17:53,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-29 22:17:53,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-29 22:17:53,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1008 transitions. [2023-08-29 22:17:53,206 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4186046511627907 [2023-08-29 22:17:53,206 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1008 transitions. [2023-08-29 22:17:53,206 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1008 transitions. [2023-08-29 22:17:53,206 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:17:53,206 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1008 transitions. [2023-08-29 22:17:53,208 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:17:53,211 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 602.0) internal successors, (3010), 5 states have internal predecessors, (3010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:17:53,212 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 602.0) internal successors, (3010), 5 states have internal predecessors, (3010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:17:53,212 INFO L175 Difference]: Start difference. First operand has 59 places, 60 transitions, 195 flow. Second operand 4 states and 1008 transitions. [2023-08-29 22:17:53,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 64 transitions, 330 flow [2023-08-29 22:17:53,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 64 transitions, 317 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 22:17:53,214 INFO L231 Difference]: Finished difference. Result has 61 places, 61 transitions, 209 flow [2023-08-29 22:17:53,214 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=602, PETRI_DIFFERENCE_MINUEND_FLOW=179, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=209, PETRI_PLACES=61, PETRI_TRANSITIONS=61} [2023-08-29 22:17:53,214 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -10 predicate places. [2023-08-29 22:17:53,214 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 61 transitions, 209 flow [2023-08-29 22:17:53,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 238.75) internal successors, (955), 4 states have internal predecessors, (955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:17:53,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:17:53,215 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-29 22:17:53,223 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-08-29 22:17:53,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:17:53,423 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-29 22:17:53,424 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:17:53,424 INFO L85 PathProgramCache]: Analyzing trace with hash 34236186, now seen corresponding path program 1 times [2023-08-29 22:17:53,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 22:17:53,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1174542462] [2023-08-29 22:17:53,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:17:53,424 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:17:53,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 22:17:53,425 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 22:17:53,427 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-08-29 22:17:53,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:17:53,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-29 22:17:53,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 22:17:53,500 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 22:17:53,500 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 22:17:53,500 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 22:17:53,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1174542462] [2023-08-29 22:17:53,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1174542462] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:17:53,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:17:53,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 22:17:53,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358495283] [2023-08-29 22:17:53,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:17:53,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 22:17:53,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 22:17:53,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 22:17:53,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 22:17:53,539 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 602 [2023-08-29 22:17:53,540 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 61 transitions, 209 flow. Second operand has 3 states, 3 states have (on average 253.33333333333334) internal successors, (760), 3 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:17:53,540 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:17:53,540 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 602 [2023-08-29 22:17:53,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:17:54,915 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-29 22:17:55,508 INFO L130 PetriNetUnfolder]: 227/544 cut-off events. [2023-08-29 22:17:55,508 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 22:17:55,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1106 conditions, 544 events. 227/544 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2856 event pairs, 190 based on Foata normal form. 1/261 useless extension candidates. Maximal degree in co-relation 1067. Up to 463 conditions per place. [2023-08-29 22:17:55,510 INFO L137 encePairwiseOnDemand]: 599/602 looper letters, 49 selfloop transitions, 4 changer transitions 0/61 dead transitions. [2023-08-29 22:17:55,510 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 61 transitions, 311 flow [2023-08-29 22:17:55,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 22:17:55,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 22:17:55,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 807 transitions. [2023-08-29 22:17:55,514 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.446843853820598 [2023-08-29 22:17:55,514 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 807 transitions. [2023-08-29 22:17:55,514 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 807 transitions. [2023-08-29 22:17:55,514 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:17:55,514 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 807 transitions. [2023-08-29 22:17:55,516 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 269.0) internal successors, (807), 3 states have internal predecessors, (807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:17:55,518 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 602.0) internal successors, (2408), 4 states have internal predecessors, (2408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:17:55,519 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 602.0) internal successors, (2408), 4 states have internal predecessors, (2408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:17:55,520 INFO L175 Difference]: Start difference. First operand has 61 places, 61 transitions, 209 flow. Second operand 3 states and 807 transitions. [2023-08-29 22:17:55,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 61 transitions, 311 flow [2023-08-29 22:17:55,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 61 transitions, 305 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-29 22:17:55,525 INFO L231 Difference]: Finished difference. Result has 61 places, 59 transitions, 197 flow [2023-08-29 22:17:55,525 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=602, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=197, PETRI_PLACES=61, PETRI_TRANSITIONS=59} [2023-08-29 22:17:55,527 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -10 predicate places. [2023-08-29 22:17:55,527 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 59 transitions, 197 flow [2023-08-29 22:17:55,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 253.33333333333334) internal successors, (760), 3 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:17:55,527 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:17:55,528 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-29 22:17:55,544 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-08-29 22:17:55,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:17:55,736 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-29 22:17:55,736 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:17:55,736 INFO L85 PathProgramCache]: Analyzing trace with hash 34239978, now seen corresponding path program 1 times [2023-08-29 22:17:55,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 22:17:55,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1286986837] [2023-08-29 22:17:55,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:17:55,737 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:17:55,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 22:17:55,738 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 22:17:55,740 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-08-29 22:17:56,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:17:56,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 39 conjunts are in the unsatisfiable core [2023-08-29 22:17:56,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 22:17:58,913 INFO L321 Elim1Store]: treesize reduction 372, result has 28.0 percent of original size [2023-08-29 22:17:58,913 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 4 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 506 treesize of output 649 [2023-08-29 22:18:05,497 WARN L222 SmtUtils]: Spent 6.40s on a formula simplification. DAG size of input: 122 DAG size of output: 54 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-08-29 22:18:05,497 INFO L321 Elim1Store]: treesize reduction 372, result has 28.0 percent of original size [2023-08-29 22:18:05,498 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 4 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 1022 treesize of output 857 [2023-08-29 22:18:05,751 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2023-08-29 22:18:06,079 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2023-08-29 22:18:06,346 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 19 [2023-08-29 22:18:06,568 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 13 [2023-08-29 22:18:06,839 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 19 [2023-08-29 22:18:07,039 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2023-08-29 22:18:07,404 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2023-08-29 22:18:07,651 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2023-08-29 22:18:07,863 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2023-08-29 22:18:08,027 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 19 [2023-08-29 22:18:19,102 INFO L217 Elim1Store]: Index analysis took 167 ms [2023-08-29 22:18:19,260 INFO L321 Elim1Store]: treesize reduction 235, result has 3.3 percent of original size [2023-08-29 22:18:19,261 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 12 case distinctions, treesize of input 801 treesize of output 774 [2023-08-29 22:18:19,943 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2023-08-29 22:18:21,114 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 22:18:21,167 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 22:18:21,168 INFO L217 Elim1Store]: Index analysis took 105 ms [2023-08-29 22:18:21,259 INFO L321 Elim1Store]: treesize reduction 103, result has 7.2 percent of original size [2023-08-29 22:18:21,259 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 1256 treesize of output 1223 [2023-08-29 22:18:22,297 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2023-08-29 22:18:22,396 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2023-08-29 22:18:22,548 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2023-08-29 22:18:29,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 22:18:29,460 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 22:18:29,489 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 22:18:29,550 INFO L321 Elim1Store]: treesize reduction 43, result has 36.8 percent of original size [2023-08-29 22:18:29,551 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 4139 treesize of output 3934 [2023-08-29 22:18:29,763 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 11 [2023-08-29 22:18:30,118 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 11 [2023-08-29 22:18:30,313 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 11 [2023-08-29 22:18:30,344 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 11 [2023-08-29 22:18:30,699 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 11 [2023-08-29 22:18:30,743 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 11 [2023-08-29 22:18:30,829 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 11 [2023-08-29 22:18:31,600 INFO L321 Elim1Store]: treesize reduction 119, result has 0.8 percent of original size [2023-08-29 22:18:31,600 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 258 treesize of output 147 [2023-08-29 22:18:31,675 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 11 [2023-08-29 22:18:31,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 22:18:31,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 22:18:31,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 22:18:31,890 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 22:18:31,905 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 22:18:31,928 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 22:18:31,967 INFO L321 Elim1Store]: treesize reduction 57, result has 21.9 percent of original size [2023-08-29 22:18:31,967 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 402 treesize of output 371 [2023-08-29 22:18:32,004 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 11 [2023-08-29 22:18:32,015 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 11 [2023-08-29 22:18:32,048 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 11 [2023-08-29 22:18:32,302 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 22:18:41,012 WARN L222 SmtUtils]: Spent 8.44s on a formula simplification. DAG size of input: 139 DAG size of output: 82 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-08-29 22:18:41,013 INFO L321 Elim1Store]: treesize reduction 479, result has 38.7 percent of original size [2023-08-29 22:18:41,015 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 7 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 10 new quantified variables, introduced 31 case distinctions, treesize of input 66701 treesize of output 51830 [2023-08-29 22:18:42,905 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2023-08-29 22:18:43,470 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2023-08-29 22:18:45,456 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2023-08-29 22:18:46,651 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2023-08-29 22:18:49,055 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2023-08-29 22:18:50,288 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2023-08-29 22:18:50,761 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2023-08-29 22:19:26,653 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2023-08-29 22:19:26,790 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2023-08-29 22:19:27,154 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2023-08-29 22:19:27,774 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2023-08-29 22:19:34,380 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 22:19:34,386 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 22:19:34,398 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 22:19:34,398 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 22:19:34,399 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 22:19:34,400 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 1928 treesize of output 189 [2023-08-29 22:19:34,470 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 22:19:34,476 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 22:19:34,489 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 22:19:34,492 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 22:19:34,498 INFO L321 Elim1Store]: treesize reduction 225, result has 0.4 percent of original size [2023-08-29 22:19:34,498 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 2834 treesize of output 95 [2023-08-29 22:19:34,591 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 22:19:34,597 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 22:19:34,638 INFO L321 Elim1Store]: treesize reduction 51, result has 1.9 percent of original size [2023-08-29 22:19:34,638 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 1100 treesize of output 785 [2023-08-29 22:19:34,749 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2023-08-29 22:19:34,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 22:19:34,769 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 22:19:34,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 22:19:34,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 22:19:34,795 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 22:19:34,807 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2023-08-29 22:19:34,808 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 635 treesize of output 703 [2023-08-29 22:19:34,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 22:19:34,950 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 22:19:34,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 22:19:35,217 INFO L321 Elim1Store]: treesize reduction 92, result has 42.9 percent of original size [2023-08-29 22:19:35,218 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 4932 treesize of output 3215 [2023-08-29 22:19:36,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 22:19:36,651 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 22:19:36,652 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 22:19:36,663 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-08-29 22:19:36,663 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 435 treesize of output 1 [2023-08-29 22:19:36,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 22:19:36,877 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 22:19:37,285 INFO L321 Elim1Store]: treesize reduction 137, result has 32.2 percent of original size [2023-08-29 22:19:37,286 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 8550 treesize of output 7179 [2023-08-29 22:19:37,693 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2023-08-29 22:19:37,826 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2023-08-29 22:19:38,633 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2023-08-29 22:19:41,125 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2023-08-29 22:19:41,203 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2023-08-29 22:19:41,269 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2023-08-29 22:19:41,345 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2023-08-29 22:19:41,478 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 22:19:41,507 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 22:19:41,522 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 22:19:41,532 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 22:19:41,533 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 295 treesize of output 291 [2023-08-29 22:19:41,620 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 22:19:41,620 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 22:19:41,644 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 22:19:41,644 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 22:19:41,645 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 295 treesize of output 291 [2023-08-29 22:19:41,731 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 22:19:41,755 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 22:19:41,757 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 295 treesize of output 291 [2023-08-29 22:19:41,822 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 22:19:41,823 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 22:19:41,862 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 22:19:41,877 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 22:19:41,889 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 22:19:41,890 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 295 treesize of output 291 [2023-08-29 22:19:42,006 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 22:19:42,011 INFO L321 Elim1Store]: treesize reduction 99, result has 1.0 percent of original size [2023-08-29 22:19:42,012 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 711 treesize of output 1 [2023-08-29 22:19:42,064 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 22:19:42,065 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 22:19:42,065 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 659 treesize of output 1 [2023-08-29 22:19:42,221 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 22:19:42,222 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 711 treesize of output 1 [2023-08-29 22:19:42,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 22:19:42,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 22:19:42,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 22:19:42,390 INFO L321 Elim1Store]: treesize reduction 134, result has 0.7 percent of original size [2023-08-29 22:19:42,390 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 1167 treesize of output 843 [2023-08-29 22:19:42,916 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2023-08-29 22:19:49,369 INFO L321 Elim1Store]: treesize reduction 63, result has 1.6 percent of original size [2023-08-29 22:19:49,370 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 588 treesize of output 403 [2023-08-29 22:19:49,379 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 378 treesize of output 234 [2023-08-29 22:22:18,595 WARN L222 SmtUtils]: Spent 2.44m on a formula simplification. DAG size of input: 2126 DAG size of output: 2074 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-29 22:22:18,604 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 22:22:18,604 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 22:22:18,604 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 22:22:18,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1286986837] [2023-08-29 22:22:18,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1286986837] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:22:18,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:22:18,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 22:22:18,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028026582] [2023-08-29 22:22:18,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:22:18,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 22:22:18,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 22:22:18,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 22:22:18,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 22:22:27,745 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 221 out of 602 [2023-08-29 22:22:27,746 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 59 transitions, 197 flow. Second operand has 3 states, 3 states have (on average 222.33333333333334) internal successors, (667), 3 states have internal predecessors, (667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:22:27,746 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:22:27,746 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 221 of 602 [2023-08-29 22:22:27,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:22:30,568 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 22:22:34,132 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 22:22:35,388 INFO L130 PetriNetUnfolder]: 227/540 cut-off events. [2023-08-29 22:22:35,388 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-29 22:22:35,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1093 conditions, 540 events. 227/540 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2834 event pairs, 190 based on Foata normal form. 2/260 useless extension candidates. Maximal degree in co-relation 1041. Up to 459 conditions per place. [2023-08-29 22:22:35,390 INFO L137 encePairwiseOnDemand]: 597/602 looper letters, 46 selfloop transitions, 5 changer transitions 0/59 dead transitions. [2023-08-29 22:22:35,390 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 59 transitions, 299 flow [2023-08-29 22:22:35,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 22:22:35,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 22:22:35,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 713 transitions. [2023-08-29 22:22:35,394 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3947951273532669 [2023-08-29 22:22:35,395 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 713 transitions. [2023-08-29 22:22:35,395 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 713 transitions. [2023-08-29 22:22:35,395 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:22:35,395 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 713 transitions. [2023-08-29 22:22:35,396 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 237.66666666666666) internal successors, (713), 3 states have internal predecessors, (713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:22:35,398 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 602.0) internal successors, (2408), 4 states have internal predecessors, (2408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:22:35,399 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 602.0) internal successors, (2408), 4 states have internal predecessors, (2408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:22:35,399 INFO L175 Difference]: Start difference. First operand has 61 places, 59 transitions, 197 flow. Second operand 3 states and 713 transitions. [2023-08-29 22:22:35,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 59 transitions, 299 flow [2023-08-29 22:22:35,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 59 transitions, 290 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 22:22:35,403 INFO L231 Difference]: Finished difference. Result has 61 places, 59 transitions, 207 flow [2023-08-29 22:22:35,403 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=602, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=207, PETRI_PLACES=61, PETRI_TRANSITIONS=59} [2023-08-29 22:22:35,404 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -10 predicate places. [2023-08-29 22:22:35,404 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 59 transitions, 207 flow [2023-08-29 22:22:35,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 222.33333333333334) internal successors, (667), 3 states have internal predecessors, (667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:22:35,404 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:22:35,405 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-29 22:22:35,417 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-08-29 22:22:35,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:22:35,615 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-29 22:22:35,615 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:22:35,615 INFO L85 PathProgramCache]: Analyzing trace with hash 1061436566, now seen corresponding path program 1 times [2023-08-29 22:22:35,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 22:22:35,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1747500885] [2023-08-29 22:22:35,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:22:35,615 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:22:35,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 22:22:35,616 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 22:22:35,617 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-08-29 22:22:35,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:22:35,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-29 22:22:35,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 22:22:35,769 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 22:22:35,769 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 22:22:35,786 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 22:22:35,786 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 22:22:35,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1747500885] [2023-08-29 22:22:35,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1747500885] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 22:22:35,787 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-29 22:22:35,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-08-29 22:22:35,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116460473] [2023-08-29 22:22:35,787 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-29 22:22:35,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 22:22:35,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 22:22:35,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 22:22:35,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-29 22:22:35,820 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 251 out of 602 [2023-08-29 22:22:35,821 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 59 transitions, 207 flow. Second operand has 6 states, 6 states have (on average 252.33333333333334) internal successors, (1514), 6 states have internal predecessors, (1514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:22:35,821 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:22:35,822 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 251 of 602 [2023-08-29 22:22:35,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:22:38,886 INFO L130 PetriNetUnfolder]: 228/549 cut-off events. [2023-08-29 22:22:38,886 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-29 22:22:38,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1141 conditions, 549 events. 228/549 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2889 event pairs, 190 based on Foata normal form. 6/273 useless extension candidates. Maximal degree in co-relation 1044. Up to 458 conditions per place. [2023-08-29 22:22:38,888 INFO L137 encePairwiseOnDemand]: 598/602 looper letters, 49 selfloop transitions, 8 changer transitions 0/65 dead transitions. [2023-08-29 22:22:38,888 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 65 transitions, 366 flow [2023-08-29 22:22:38,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 22:22:38,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 22:22:38,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1563 transitions. [2023-08-29 22:22:38,893 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43272425249169433 [2023-08-29 22:22:38,893 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1563 transitions. [2023-08-29 22:22:38,893 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1563 transitions. [2023-08-29 22:22:38,894 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:22:38,894 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1563 transitions. [2023-08-29 22:22:38,896 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 260.5) internal successors, (1563), 6 states have internal predecessors, (1563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:22:38,899 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 602.0) internal successors, (4214), 7 states have internal predecessors, (4214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:22:38,899 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 602.0) internal successors, (4214), 7 states have internal predecessors, (4214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:22:38,899 INFO L175 Difference]: Start difference. First operand has 61 places, 59 transitions, 207 flow. Second operand 6 states and 1563 transitions. [2023-08-29 22:22:38,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 65 transitions, 366 flow [2023-08-29 22:22:38,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 65 transitions, 358 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 22:22:38,901 INFO L231 Difference]: Finished difference. Result has 69 places, 63 transitions, 272 flow [2023-08-29 22:22:38,901 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=602, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=272, PETRI_PLACES=69, PETRI_TRANSITIONS=63} [2023-08-29 22:22:38,902 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -2 predicate places. [2023-08-29 22:22:38,902 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 63 transitions, 272 flow [2023-08-29 22:22:38,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 252.33333333333334) internal successors, (1514), 6 states have internal predecessors, (1514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:22:38,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:22:38,902 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1] [2023-08-29 22:22:38,912 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-08-29 22:22:39,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:22:39,112 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-29 22:22:39,112 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:22:39,112 INFO L85 PathProgramCache]: Analyzing trace with hash 1822332095, now seen corresponding path program 2 times [2023-08-29 22:22:39,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 22:22:39,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [104022131] [2023-08-29 22:22:39,113 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-29 22:22:39,113 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:22:39,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 22:22:39,113 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 22:22:39,114 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-08-29 22:22:39,565 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-29 22:22:39,565 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 22:22:39,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 744 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-29 22:22:39,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 22:22:39,626 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 22:22:39,626 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 22:22:39,705 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 22:22:39,705 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 22:22:39,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [104022131] [2023-08-29 22:22:39,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [104022131] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 22:22:39,705 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-29 22:22:39,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-08-29 22:22:39,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881192090] [2023-08-29 22:22:39,705 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-29 22:22:39,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-29 22:22:39,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 22:22:39,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-29 22:22:39,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-08-29 22:22:39,859 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 251 out of 602 [2023-08-29 22:22:39,861 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 63 transitions, 272 flow. Second operand has 12 states, 12 states have (on average 252.16666666666666) internal successors, (3026), 12 states have internal predecessors, (3026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:22:39,861 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:22:39,861 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 251 of 602 [2023-08-29 22:22:39,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:22:46,575 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-29 22:22:49,703 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-29 22:22:54,155 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-29 22:22:55,819 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-29 22:22:57,889 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-29 22:23:02,747 INFO L130 PetriNetUnfolder]: 228/567 cut-off events. [2023-08-29 22:23:02,748 INFO L131 PetriNetUnfolder]: For 167/167 co-relation queries the response was YES. [2023-08-29 22:23:02,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1271 conditions, 567 events. 228/567 cut-off events. For 167/167 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3025 event pairs, 190 based on Foata normal form. 12/297 useless extension candidates. Maximal degree in co-relation 1070. Up to 458 conditions per place. [2023-08-29 22:23:02,750 INFO L137 encePairwiseOnDemand]: 598/602 looper letters, 55 selfloop transitions, 14 changer transitions 0/77 dead transitions. [2023-08-29 22:23:02,750 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 77 transitions, 550 flow [2023-08-29 22:23:02,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-29 22:23:02,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-29 22:23:02,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3084 transitions. [2023-08-29 22:23:02,756 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4269102990033223 [2023-08-29 22:23:02,756 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3084 transitions. [2023-08-29 22:23:02,756 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3084 transitions. [2023-08-29 22:23:02,757 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:23:02,757 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3084 transitions. [2023-08-29 22:23:02,761 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 257.0) internal successors, (3084), 12 states have internal predecessors, (3084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:23:02,767 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 602.0) internal successors, (7826), 13 states have internal predecessors, (7826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:23:02,768 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 602.0) internal successors, (7826), 13 states have internal predecessors, (7826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:23:02,768 INFO L175 Difference]: Start difference. First operand has 69 places, 63 transitions, 272 flow. Second operand 12 states and 3084 transitions. [2023-08-29 22:23:02,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 77 transitions, 550 flow [2023-08-29 22:23:02,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 77 transitions, 540 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-29 22:23:02,770 INFO L231 Difference]: Finished difference. Result has 86 places, 70 transitions, 395 flow [2023-08-29 22:23:02,770 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=602, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=395, PETRI_PLACES=86, PETRI_TRANSITIONS=70} [2023-08-29 22:23:02,771 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 15 predicate places. [2023-08-29 22:23:02,771 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 70 transitions, 395 flow [2023-08-29 22:23:02,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 252.16666666666666) internal successors, (3026), 12 states have internal predecessors, (3026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:23:02,772 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:23:02,772 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1] [2023-08-29 22:23:02,796 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-08-29 22:23:02,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:23:02,987 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-29 22:23:02,987 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:23:02,987 INFO L85 PathProgramCache]: Analyzing trace with hash 271562079, now seen corresponding path program 3 times [2023-08-29 22:23:02,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 22:23:02,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1739358281] [2023-08-29 22:23:02,988 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-29 22:23:02,988 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:23:02,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 22:23:02,989 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 22:23:02,990 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process Killed by 15